[Plugin: Google XML Sitemaps] XML Sitemap Error – Sitemap Not Generating

I’m having a problem with the Google XML Sitemaps plugin. Its working on every site I’ve loaded it on except one, the most recent one I am working on. I suspect the damage may have been done either by a recent malware attack I experienced, or by one of a number of plugins I’ve installed on this site, and unfortunately, there are so many new ones I’ve installed its hard to figure out where the problem arose.

I submitted the sitemap address to Google Webmaster Tools because only about half of my pages were indexed, which was odd, and got some error messages. So I went back and looked at it, and instead of the sitemap content that I’m finding on all the other sites, this is the error message I get:

Error loading stylesheet:

A network error occured loading an XSLT stylesheet:https://domainname.com/wp-content/plugins/google-sitemap-generator/sitemap.xsl

I’ve tried to make it rebuild manually, and it doesn’t, I’ve tried deactivated and reactivating the plugin, and that didn’t work either. What should I do to fix this problem? At this point, I don’t know what to do other than try another sitemap generator, but this one has worked great for me up until now, I’m reluctant to mess with what has been working thus far if I can correct it somehow.

https://www.ads-software.com/extend/plugins/google-sitemap-generator/